Is a bracket that's air tight a problem?  Just about every boat compartment I know of can breath.  Are these brackets built tough enough to withstand large temperature changes if sealed completely?
To get to this point, I read all the threads on how to seal a bracket. After following them closely I ended up with a well sealed bracket. What surprised me after using the boat for a weekend was when I opened the bracket drain the bracket was pressurized and a bunch of air blew out. I must have closed it up when it was cool out and the air expanded as it warmed up.
I'm a little worried that too great of a temperature change one way or another could have a detrimental effect on the bracket.
	
		
			
		
		
	
				
			To get to this point, I read all the threads on how to seal a bracket. After following them closely I ended up with a well sealed bracket. What surprised me after using the boat for a weekend was when I opened the bracket drain the bracket was pressurized and a bunch of air blew out. I must have closed it up when it was cool out and the air expanded as it warmed up.
I'm a little worried that too great of a temperature change one way or another could have a detrimental effect on the bracket.
 
	 
 